CA1247209A - Compteurs a affichage enregistre code pour detecter les trafiquages - Google Patents

Compteurs a affichage enregistre code pour detecter les trafiquages

Info

Publication number
CA1247209A
CA1247209A CA000490593A CA490593A CA1247209A CA 1247209 A CA1247209 A CA 1247209A CA 000490593 A CA000490593 A CA 000490593A CA 490593 A CA490593 A CA 490593A CA 1247209 A CA1247209 A CA 1247209A
Authority
CA
Canada
Prior art keywords
display
light
meter
measuring
angular position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000490593A
Other languages
English (en)
Inventor
R. Wendell Goodwin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Itron Electricity Metering Inc
Original Assignee
Sangamo Weston Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sangamo Weston Inc filed Critical Sangamo Weston Inc
Application granted granted Critical
Publication of CA1247209A publication Critical patent/CA1247209A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Transform (AREA)
CA000490593A 1984-09-13 1985-09-12 Compteurs a affichage enregistre code pour detecter les trafiquages Expired CA1247209A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/650,151 US4665359A (en) 1984-09-13 1984-09-13 Method and apparatus for detecting tampering with a meter having an encoded register display
US650,151 1991-02-04

Publications (1)

Publication Number Publication Date
CA1247209A true CA1247209A (fr) 1988-12-20

Family

ID=24607696

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000490593A Expired CA1247209A (fr) 1984-09-13 1985-09-12 Compteurs a affichage enregistre code pour detecter les trafiquages

Country Status (2)

Country Link
US (1) US4665359A (fr)
CA (1) CA1247209A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113130A (en) * 1990-04-05 1992-05-12 General Electric Company Testing operation of electric energy meter optics system
US5293115A (en) * 1991-08-06 1994-03-08 Schlumberger Industries, Inc. Method and system for sensing removal of a utility meter from its socket
US5874731A (en) * 1995-03-20 1999-02-23 Schlumberger Industries, Inc. Ambient light filter
US5750983A (en) * 1995-03-20 1998-05-12 Schlumberger Industries, Inc. Meter sensor light tamper detector
DE19728313A1 (de) * 1997-07-03 1999-01-07 Zf Luftfahrttechnik Gmbh Drehwinkelsensor
US7775422B2 (en) 2003-06-13 2010-08-17 Arad Measuring Technologies Ltd. Meter register and remote meter reader utilizing a stepper motor
US7267014B2 (en) * 2004-09-23 2007-09-11 Arad Measuring Technologies Ltd. Meter register having an encoder

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846788A (en) * 1971-03-26 1974-11-05 Automated Technology Corp Polydecade decimal to digital encoder
US3833901A (en) * 1972-08-28 1974-09-03 Little Inc A Magnetic compass having remote digital readout
DE2335942C2 (de) * 1973-07-14 1982-06-16 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Optischer digitaler Winkelcodierer
US4104588A (en) * 1977-01-28 1978-08-01 Wyman Westberry Tamper prevention apparatus for watt-hour meter
US4190767A (en) * 1978-06-26 1980-02-26 Trw Inc. Optical encoder apparatus
US4264897A (en) * 1979-06-13 1981-04-28 General Electric Company Meter register encoder including electronics providing remote reading capability
US4321531A (en) * 1979-09-17 1982-03-23 Sangamo-Weston Inc. Direction sensitive pulse initiator for a wattmeter
JPS57136118A (en) * 1981-02-17 1982-08-23 Ricoh Co Ltd Setting of phase difference in two sets of pulse trains of rotary encoder
US4422026A (en) * 1981-12-31 1983-12-20 Bell & Howell Company Servo control arrangement utilizing alternately energized light sources and a single photodetector
US4472629A (en) * 1982-02-09 1984-09-18 Xerox Corporation Optical encoder improvement
US4475034A (en) * 1982-06-24 1984-10-02 International Business Machines Corporation Modular shaft encoder
US4514683A (en) * 1982-09-30 1985-04-30 Deibert Richard L Tamper indicating and theft preventing electrical meter
EP0124434A1 (fr) * 1983-04-29 1984-11-07 Sangamo Weston, Inc. Appareil d'affichage d'information optique décodé avec un indicateur de fraude
GB8403457D0 (en) * 1984-02-09 1984-03-14 Thorn Emi Dynatel Ltd Meters

Also Published As

Publication number Publication date
US4665359A (en) 1987-05-12

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Legal Events

Date Code Title Description
MKEX Expiry